Shulou(Shulou.com)06/02 Report--

Before configuring DNS, it is necessary to understand the role of DNS and so on:

DNS (Domain Name System, Domain name system), a distributed database on the Internet as a mapping between domain names and IP addresses, can make it more convenient for users to access the Internet without having to remember the IP strings that can be read directly by the machine. The process of getting the IP address corresponding to the host name through the host name is called domain name resolution (or host name resolution). DNS protocol runs on top of UDP protocol, using port number 53

Next, install the named service and nslookup.

Yum install bind-chroot-y

Yum install bind-utils-y

Open the configuration file vim / etc/named.conf and change the following line 127.0.0.1 to any. Allow listening to all IP.

Change the following line localhost to any. Any host query is allowed.

Forward resolution: (convert domain name to IP address)

Vim / etc/named.rfc1912.zones # edit the zone configuration file and add the following configuration at the bottom

# type is the service type: there are three modes: hint (root zone), master (primary zone), and slave (secondary zone)

# file domain name zone file save directory, default in / var/name, pay attention to punctuation, sentence end with; indicate.

Cd / var/named/

Cp-a named.localhost laotang6.com

Edit the vim laotang6.com as shown in the following figure

Check command

Named-chezone laotang6.com / var/named/laotang6.com

Named-checonf / etc/name.conf

Systemctl restart named # restart the service

Verify whether DNS is successful on this machine. If you don't have nslookup installed, please see the installation above.

Note: the DSN on this machine must point to yourself.

There is no problem with the verification here, let's go on to configure the direction area. And then go to the client side to test.

Reverse resolution: (convert IP address to domain name)

Vim / etc/named.rfc1912.zones # edit the zone configuration file and add the following configuration at the bottom

Cd / var/named/

Cp-a named.loopback 192.168.23.arpa

Edit the vim 192.168.23.arpa as shown in the following figure

The check command is shown below:

Systemctl restart named # restart the service

Verify whether DNS is successful on the local machine

Firewall allow command

Firewall-cmd-permanent-add-service=dns

Firewall-cmd-reload

Window client test (client DNS points to linux server)

Client test OK!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.